You're right.
I forgot to say it will get hotter with the air wide opened, but not as hot as if I have a piece of wood on top of them with it wide open. It seems it doesn't get the same draw because it's much cooler stove top wise, and it doesn't put the heat off the front of the stove the same way. The coals also burn down a lot quicker with the increase in airflow with the piece of wood on top so I can get a full load of wood in quicker. I do like that nice blue flame off the coals, but that doesn't last long and the volatile gases are gone, it has real good heat then though.
Yours gets that hot just from the coals
. My chimney is only about 11' tall, maybe if I had more draft it would get a lot more heat out of the coals alone as
@al-k was saying a little air blowing on them certainly will get them warmed up, but it just doesn't seem to be how mine works. The only time I have a real problem with the overcoaling is when it's very cold out, other than that I just let the coals burn down a bit before refueling.